실교 가진시험을 통한 현수교의 고유진동특성 연구

Vibrational Characteristics of Suspension Bridge by Full-Scale Test

  • 조선규 (서울산업대학교 토목공학과) ;
  • 김선곤 (현대산업개발 토목설계팀)
  • 발행 : 2006.02.01

초록

The bridge to be analyzed is a self-anchored suspension bridge which is constructed within the country. Forced vibration test was performed with oscillator for verification of safety, maintenance and management. In this study, the feasibility of deduction was verified with the modified analysis model by comparing natural frequency, natural mode and damping ratio of the real bridge, which are obtained from the vibration test of the whole bridge after construction of 3-dimensional self-anchored cable suspension bridge, with the eigenvalue of analytic computation model and evaluating them. As a result of study, the friction of bridge bearing must be considered to get the natural frequencies of flexural vibration, and evaluating the polar moment of inertia is critical factor in analysis modeling in case of torsional vibration. The logarithmic damping ratio of the test appeared to exceed the ordinary one assumed at the design phase.

키워드

참고문헌

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